Spindle brake



March 17, 1936..

W. O. ALDRICH SPINDLE BRAKE Filed July 21, 19:4

2 Sheets-Sheet l INVENTOR. V

ATTORNEY Wm @M,

March 17, 1936. w. o. ALDRICH SPINDLE BRAKE Filed July 21, 1934 2 Sheets-Sheet 2 INVENTOR.

# ATTORNEY:

Patented Mar. 17, 1936 FlCE SPINDLE BRAKE William 0. Aldrich,

Whitinsville, Mass., assignor I to Whitin Machine Works, Whitinsville, Mas's.,

a corporation of Massachusetts Application July 21, 1934,'Serial No. 736,393 2 Claims. (01. 118-6 This invention relates to spinning or twisting machines of the type in which each spindle is mounted in a swinging arm or support, and in which a spring is provided to move each spindle and its support yieldingly toward a continuously moving driving belt, by which belt a considerable number of spindles are driven. Each spindle is provided with an elongated whirl and is frictionally rotated by said belt when said whirl contacts therewith.

When a yarn end breaks during the operation of the machine, it is necessary for the operator to successively swing the spindle and its support forward against spring pressure, hold these parts in forward position, stop the spindle, and piece the yarn end after the spindle is stopped and while it is maintained in forward or nondriving position.

One hand of the operator is thus continuously engaged in preventing premature return movement of the spindle and support, and the other hand must successively stop the spindle and piece the yarn end. These successive activities take considerable time and the yarn is frequently soiled by the operator's fingers after a spindle has been grasped and stopped therewith.

It is the general object of my invention to provide improved means by which a spindle of this type may be conveniently moved forward and stopped with one hand only, leaving the other hand free for piecing the yarn end.

A further object is to provide a construction as above defined which may be conveniently applied to old as well as new spindles.

My invention further relates to arrangements and combinations of parts which will be hereinafter described and more particularly pointed out in the appended claims.

Preferred forms of the invention are shown in the drawings, in which Fig. 1 is a front elevation of a spindle having my improvements embodied therein;

Fig. 2 is a plan view thereof;

Fig. 3 is a side elevation, looking in the direction of the arrow 3 in Fig. 1;

Fig. 4 is a plan view of the brake lever;

Fig. 5 is a side elevation thereof;

Fig. 6 is a detail sectional view, the line 66 in Fig. 4;

Fig. 7 is a partial side elevation showing the application of my invention to an old spindle;

Fig. 8 is a plan view of the lever support used with old spindles, and r Fig. 9 is a side elevation of said support.

Referring to Figs. 1 to 6, I have shown a taken along spindle blade 10 rotatably mounted in a spindle base II and having an elongated whirl l2 normally engaging a continuously moving driving beltv M. The spindlebase H is mounted in a swinging'arm or support l6 which in turn is 5 mounted on a fixed bearing member I! and-is yieldingly forced toward the belt M by a tension spring I 8, connected to the arm or support l6 at the point l9.

The whirl l2 has a flange 20 at its lower end, 10 positioned for engagement by friction blocks 2| fixed in the rear end of forked arms 22 forming part of a brake lever 23.

The lever 23 is mounted on a pivot pin 25 driven through an upward projection 26 of the spindle base II. The lever 23 is also provided with a down-curved or hook-shaped handle portion 28 at its front end, as shown in Fig. 5.. The normal position of the brake lever 23'is shown in full lines in Fig. 3 and the braking position is shown in broken lines in Fig. 3.

When a yarn end breaks and it is necessary to stop a spindle," the operator grasps the hookshaped portion 28 of the corresponding brake lever 23 and pulls forward. This forward pull causes the lever to rock about its pivot stud 25, thus forcing the friction blocks 2| downward against the upper face of the flange 20 and stopping the spindle I 0. At the same time the forward pull on the portion 28 overcomes the resistance of the tension spring l8 and swings the spindle l0 forward out of engagement with the driving. belt M. The spindle I0 is thus moved forward and the brake applied by a single effort of the operator, whose other hand is left free for in piecing the end.

In Figs. '7, 8, and 9 I have shown the manner in which my invention may be applied to spindles already manufactured. For this purpose, I pivot the brake lever 23 on a lever support orbracket i0 30, preferably formed of sheet metal and comprising a body portion 3| and spaced upstanding ears 32. The body portion 3| is clamped under the spindle base 33, as indicated in Fig. 7, thus supporting the brake lever 23 in substantially the same location as in the form previously described.

By this slight modification, my invention is made available for spindles already in use, as well as for new spindleswhich may be hereafter manufactured. The use and advantages of the construction shown'in Figs. 7 to -9 is the same as previously stated for the construction shown in Figs.'1to6.

Both forms of my invention possess the outvery substantial advantage, as under the previous practice oil or dirt was frequently found on the yarn after the piecing of a broken end.

Having thus described my invention and the advantages thereof, 1 do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:-

1. In a spinning or twisting machine, a driving belt, a spindle, a spindle base, a support on which said spindle base is mounted, a spring acting to. swing said support and spindle toward said belt, and a brake lever pivotally mounted on said spindle base and having a handle portion normally projecting forwardly and downwardly, a pull on said handle portion being effective to swing said support and displace said spindle bodily from driving position relative to said belt and to apply said brake lever to said spindle.

2. In a spinning or twisting machine, a driving belt, a spindle, a spindle base, a support on which said spindle base is mounted, a spring acting to swing said support and spindle toward said belt, and a brake lever pivotally mounted on said spindle base, said brake lever having a handle portion normally projecting forwardly and downwardy and having friction elements positioned to engage a flange on said spindle, said parts being so disposed that a pull on said handle portion is effective to displace said spindle from driving position relative to said belt and to substantially simultaneously apply said friction elements to said flange.

3. In a spinning or twisting machine, a driving belt, a spindle, a spindle base, a support on which said spindle base is mounted, -a spring acting to move said support and spindle toward said belt, and a single device effective by manual movement relative to said spindle to apply friction pressure to stop said spindle, said device also constituting means by which said spindle may be displaced from driving position by manual movement of said brake device with said spindle.

4. In a spinning or twisting machine, a driving belt, a spindle, a spindle base, a-support on which said spindle base is mounted, a spring act'- ing to move said support and spindle toward said belt, and a brake device for said spindle movably mounted adjacent said spindle and having a handle portion effective on continued forward and upward movement to apply said brake device to stop said spindle and also to displace said spindle from driving engagement withsaid belt.

5. In a spinning or twisting machine, a driving belt, a spindle, a spindle base, a support on which said spindle base is mounted, a spring acting to swing said support and spindle toward said belt, a brake device, and a separate support for said brake device adapted to be clamped under said spindle base, said brake device being effective to apply the brake to stop the spindle by movement relative to said spindle and also being effective to displace said spindle forwardly from drivingengagement with said belt by forward manual movement of said brake device with said spindle.

WILLIAM O. ALDRICH. 

